Talk:Latent semantic analysis

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Removed link to 'Google Uses LSA in Keyword Algorithms: Discussion' (which pointed to www.singularmarketing.com/latent_semantic_analysis ), as this seems to be an out of date link.

The section on the dimension reduction ("rank") seems to underemphasize the importance of this step. The dimension reduction isn't just some noise-reduction or cleanup step -- it is critical to the induction of meaning from the text. The full explanation is given in Landauer & Dumais (1997): A Solution to Plato's Problem: The Latent Semantic Analysis Theory of Acquisition, Induction, and Representation of Knowledge, published in Psychological Review. Any thoughts? --Adono 02:54, 3 May 2006 (UTC)


[edit] Derivation

I added a section describing LSA using SVD. If LSA is viewed as something broader, and does not necessarily use SVD, I can move this elsewhere. -- Nils Grimsmo 18:16, 5 June 2006 (UTC)

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